Refine
Year of publication
- 2006 (129) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (37)
- Fachbereich Luft- und Raumfahrttechnik (21)
- Fachbereich Elektrotechnik und Informationstechnik (17)
- IfB - Institut für Bioengineering (17)
- INB - Institut für Nano- und Biotechnologien (13)
- Fachbereich Chemie und Biotechnologie (12)
- Fachbereich Energietechnik (12)
- Fachbereich Maschinenbau und Mechatronik (12)
- Fachbereich Wirtschaftswissenschaften (6)
- Fachbereich Bauingenieurwesen (3)
Has Fulltext
- no (129) (remove)
Language
- English (129) (remove)
Document Type
- Article (84)
- Conference Proceeding (33)
- Book (9)
- Part of a Book (1)
- Master's Thesis (1)
- Report (1)
Keywords
- Asteroid Deflection (1)
- Planetary Protection (1)
- Solar Sail (1)
- Trajectory Optimization (1)
Development of an optimized LSO/LuYAP phoswich detector head for the Lausanne ClearPET demonstrator
(2006)
This paper describes the LSO/LuYAP phoswich detector head developed for the ClearPET small animal PET scanner demonstrator that is under construction in Lausanne within the Crystal Clear Collaboration. The detector head consists of a dual layer of 8×8 LSO and LuYAP crystal arrays coupled to a multi-anode photomultiplier tube (Hamamatsu R7600-M64). Equalistion of the LSO/LuYAP light collection is obtained through partial attenuation of the LSO scintillation light using a thin aluminum deposit of 20-35 nm on LSO and appropriate temperature regulation of the phoswich head between 30°C to 60°C. At 511keV, typical FWHM energy resolutions of the pixels of a phoswich head amounts to (28±2)% for LSO and (25±2)% for LuYAP. The LSO versus LuYAP crystal identification efficiency is better than 98%. Six detector modules have been mounted on a rotating gantry. Axial and tangential spatial resolutions were measured up to 4 cm from the scanner axis and compared to Monte Carlo simulations using GATE. FWHM spatial resolution ranges from 1.3 mm on axis to 2.6 mm at 4 cm from the axis.
In this paper the way to a 5-day-car with respect to a modular valve train systems for spark ignited combustion engines is shown. The necessary product diversity is shift from mechanical or physical components to software components. Therefore, significant improvements of logistic indicators are expected and shown. The working principle of a camless cylinder head with respect to an electromagnetical valve train (EMVT) is explained and it is demonstrated that shifting physical diversity to software is feasible. The future design of combustion engine systems including customisation can be supported by a set of assistance tools which is shown exemplary.